Good Morning B.. I don't know of anything that removes mildew so I did the ole google search.
Some good ideas and results
http://www.thriftyfun.com/tf430323.tip.html
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RE:Mildew on Clothes
Hi, I put OxyClean and Colorsafe Bleach in water with my clothes then I boil it until the mildew comes out. I normally let the clothes remain in the pan over night with a lid on it, to keep the heat in as long as possible. I found this works like a charm on everything I have tried it on. Make sure your clothing can withstand boiling water, Oxyclean and Colorsafe Bleach before trying this idea.
Good Luck, I hope this helps!
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RE: Mildew On Clothes
By Little bit of everything (Guest Post)
Try hydrogen peroxide straight from the bottle, and let it sit for 30 min or longer, it works on clothes as well as in bathroom when you find that bleach isn't working so well anymore. Mold and mildew become immune to whatever you may be treating it with, just as virus and bacteria strains.
So this is why alternate between bleach mixed with water and hydrogen peroxide it keeps it from building immunity. Peroxide can lighten clothing like bleach does, just not as quickly, so be sure to test a small area first.
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RE: Mildew On Clothes
By Rich in Jersey (Guest Post)
Soak in white vinegar for a period of time, rinse, then wash and dry.
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Serval ideas and things to try, hopefully something will work for you B.
God Bless
K. Nana of 5